Thanks for your thoughts. I can see that its not trival to define how 'find all instances' should work with dynamic vis, and I'm glad to hear its being worked on. Guess I'll have to be patient.
It would be much nicer if 'find all instances' at least said 'this function doesn't work with dynamic vis' rather than just going beep 'none found'. At first I thought 'find all instances' was seriously broken in 8.20, and it took me a while to figure out that the problem was only with dynamic vis.
Will